// Reads a line from m_file. Removes comments that are marked with
// a hash ('#', aka the pound sign or indeed the octothorpe) character.
// Returns 0 on EOF, 1 otherwise
bool TextFileReader::ReadLine()
{
bool eof = false;
m_tokenIndex = 0;
//
// Read some data from the file
// If fgets returns NULL that means we've found the EOF
if (fgets(m_line, m_maxLineLen + 1, m_file) == NULL)
{
m_line[0] = '\0';
eof = true;
}
//
// Make sure we read a whole line
bool found = false;
while (!found && !eof)
{
if (strchr(m_line, '\n'))
{
found = true;
}
if (!found)
{
unsigned int oldLineLen = m_maxLineLen;
DoubleMaxLineLen();
if (fgets(&m_line[oldLineLen], oldLineLen + 1, m_file) == NULL)
{
eof = true;
}
}
}
CleanLine();
m_lineNum++;
return !eof;
}
// Reads a line from a block of text data. Removes comments that are marked with
// a hash ('#', aka the pound sign or indeed the octothorpe) character.
// Returns 0 on EOF, 1 otherwise
bool TextDataReader::ReadLine()
{
bool eof = false;
m_tokenIndex = 0;
// Find the next '\n' character
unsigned int eolOffset = m_offset;
for (eolOffset = m_offset; eolOffset < m_dataSize; ++eolOffset)
{
if (m_data[eolOffset] == '\n')
{
break;
}
}
if (eolOffset == m_dataSize)
{
eolOffset--;
eof = true;
}
// Make sure the line buffer is big enough to accomodate our painful length
unsigned int lineLen = eolOffset - m_offset + 1;
while (lineLen > m_maxLineLen)
{
DoubleMaxLineLen();
}
// Copy from the data block into m_line
memcpy(m_line, &m_data[m_offset], lineLen);
m_line[lineLen] = '\0';
// Move m_offset on
m_offset += lineLen;
CleanLine();
m_lineNum++;
return !eof;
}
